Creaky BB - so trying to get off non drive crank,
one of the two allen blots (lol)
refused to budge.
Long story short, drilled it out.
No damage to crank.
Result!
Found better quality allen blots (lol) cut down to correct length.
Cleaned threads in non-drive crank with 6mm tap.
Removed left side BB bearing cap (24mm hollowtech II)
Unable to shift the drive crank far enough away from the frame...
Found a 200mm length of 28mm diameter aluminium bar. Used that as a drift.
Cleaned all the grit, muck, debris out of the bottom brackety hole. (It has spent way too long under dirty puddle water, don's ask!)
Copper greased the BB threads, fitted new(ish) BB
Refitted copper greased crankshaft, non drive side crank, end plug and coppergreased allen blots (lol).
Yay no creaking on the ride today!